发明授权
- 专利标题： Magnetic recording medium
- 专利标题（中）： 磁记录介质
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申请号： US940753申请日： 1992-09-08
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公开(公告)号： US5250339A公开(公告)日： 1993-10-05
- 发明人: Noriaki Tani , Kyuzo Nakamura , Michio Ishikawa , Masanori Hashimoto , Yoshifumi Ota
- 申请人： Noriaki Tani , Kyuzo Nakamura , Michio Ishikawa , Masanori Hashimoto , Yoshifumi Ota
- 申请人地址： JPX Chigasaki
- 专利权人： Nihon Shinku Gijutsu Kabushiki Kaisha
- 当前专利权人： Nihon Shinku Gijutsu Kabushiki Kaisha
- 当前专利权人地址： JPX Chigasaki
- 优先权： JPX1-262202 19891009
- 主分类号： G11B5/66
- IPC分类号： G11B5/66 ; G11B5/72 ; G11B5/73 ; B32B3/02
摘要：
A magnetic recording medium suitable for high-density recording which comprises a non-magnetic substrate disk, at least one magnetic layer and at least one protective layer, the magnetic layer and the protective layer being formed in succession on the non-magnetic substrate disk, wherein the non-magnetic substrate disk comprises a glass substrate and at least one non-magnetic metallic film provided on the glass substrate, and the non-magnetic metallic film is provided on a surface thereof with a multitude of fine concentric grooves.